Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'b0b99e5370196d6a4f6ccb6f248f983dedc6b30e0ee5362426c92d52dd578516' 
  AND token = 'WGE85AJMg+4xZ8kk7p19VPQXh5Gk1we3VojhyCMs19M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}